I installed the Pioneer Avic 5201 with the Maestro Rr flash for my vehicle, and I can get the radio, back up camera, DVD player to work just fine, but the steering wheel controls do not work. I have tried reflashing the unit a few times, not sure what else to do as I checked the wiring chart many times as well. Any ideas as to what I should check?

I did not, but was able to get that to work. Everything works fine except for the microphone when making calls through the unit. I can hear people through the speaker, but they cannot hear me. Do I have to install a separate mic, or is there something missing to get it to work with the oem one?